849808851 has 8 divisors (see below), whose sum is σ = 1139011584. Its totient is φ = 563572680.

The previous prime is 849808847. The next prime is 849808889. The reversal of 849808851 is 158808948.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 849808851 - 2² = 849808847 is a prime.

It is a super-3 number, since 3×849808851³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 849808794 and 849808803.

It is not an unprimeable number, because it can be changed into a prime (849808811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740971 + ... + 742116.

It is an arithmetic number, because the mean of its divisors is an integer number (142376448).

Almost surely, 2^849808851 is an apocalyptic number.

849808851 is a deficient number, since it is larger than the sum of its proper divisors (289202733).

849808851 is a wasteful number, since it uses less digits than its factorization.

849808851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483281.

The product of its (nonzero) digits is 737280, while the sum is 51.

The square root of 849808851 is about 29151.4811116005. The cubic root of 849808851 is about 947.1972242639.

The spelling of 849808851 in words is "eight hundred forty-nine million, eight hundred eight thousand, eight hundred fifty-one".